Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/drivers/regulator/s2mps11.c

  1 /*
  2  * s2mps11.c
  3  *
  4  * Copyright (c) 2012-2014 Samsung Electronics Co., Ltd
  5  *              http://www.samsung.com
  6  *
  7  * This program is free software; you can redistribute  it and/or modify it
  8  * under  the terms of  the GNU General  Public License as published by the
  9  * Free Software Foundation;  either version 2 of the  License, or (at your
 10  * option) any later version.
 11  *
 12  * This program is distributed in the hope that it will be useful,
 13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 15  * GNU General Public License for more details.
 16  *
 17  */
 18 
 19 #include <linux/bug.h>
 20 #include <linux/err.h>
 21 #include <linux/gpio.h>
 22 #include <linux/slab.h>
 23 #include <linux/module.h>
 24 #include <linux/of.h>
 25 #include <linux/regmap.h>
 26 #include <linux/platform_device.h>
 27 #include <linux/regulator/driver.h>
 28 #include <linux/regulator/machine.h>
 29 #include <linux/regulator/of_regulator.h>
 30 #include <linux/mfd/samsung/core.h>
 31 #include <linux/mfd/samsung/s2mps11.h>
 32 #include <linux/mfd/samsung/s2mps14.h>
 33 
 34 struct s2mps11_info {
 35         unsigned int rdev_num;
 36         int ramp_delay2;
 37         int ramp_delay34;
 38         int ramp_delay5;
 39         int ramp_delay16;
 40         int ramp_delay7810;
 41         int ramp_delay9;
 42         /*
 43          * One bit for each S2MPS14 regulator whether the suspend mode
 44          * was enabled.
 45          */
 46         unsigned int s2mps14_suspend_state:30;
 47 };
 48 
 49 static int get_ramp_delay(int ramp_delay)
 50 {
 51         unsigned char cnt = 0;
 52 
 53         ramp_delay /= 6250;
 54 
 55         while (true) {
 56                 ramp_delay = ramp_delay >> 1;
 57                 if (ramp_delay == 0)
 58                         break;
 59                 cnt++;
 60         }
 61 
 62         if (cnt > 3)
 63                 cnt = 3;
 64 
 65         return cnt;
 66 }
 67 
 68 static int s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
 69                                    unsigned int old_selector,
 70                                    unsigned int new_selector)
 71 {
 72         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 73         unsigned int ramp_delay = 0;
 74         int old_volt, new_volt;
 75 
 76         switch (rdev_get_id(rdev)) {
 77         case S2MPS11_BUCK2:
 78                 ramp_delay = s2mps11->ramp_delay2;
 79                 break;
 80         case S2MPS11_BUCK3:
 81         case S2MPS11_BUCK4:
 82                 ramp_delay = s2mps11->ramp_delay34;
 83                 break;
 84         case S2MPS11_BUCK5:
 85                 ramp_delay = s2mps11->ramp_delay5;
 86                 break;
 87         case S2MPS11_BUCK6:
 88         case S2MPS11_BUCK1:
 89                 ramp_delay = s2mps11->ramp_delay16;
 90                 break;
 91         case S2MPS11_BUCK7:
 92         case S2MPS11_BUCK8:
 93         case S2MPS11_BUCK10:
 94                 ramp_delay = s2mps11->ramp_delay7810;
 95                 break;
 96         case S2MPS11_BUCK9:
 97                 ramp_delay = s2mps11->ramp_delay9;
 98         }
 99 
100         if (ramp_delay == 0)
101                 ramp_delay = rdev->desc->ramp_delay;
102 
103         old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
104         new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
105 
106         return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
107 }
108 
109 static int s2mps11_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
110 {
111         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
112         unsigned int ramp_val, ramp_shift, ramp_reg = S2MPS11_REG_RAMP_BUCK;
113         unsigned int ramp_enable = 1, enable_shift = 0;
114         int ret;
115 
116         switch (rdev_get_id(rdev)) {
117         case S2MPS11_BUCK1:
118                 if (ramp_delay > s2mps11->ramp_delay16)
119                         s2mps11->ramp_delay16 = ramp_delay;
120                 else
121                         ramp_delay = s2mps11->ramp_delay16;
122 
123                 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
124                 break;
125         case S2MPS11_BUCK2:
126                 enable_shift = S2MPS11_BUCK2_RAMP_EN_SHIFT;
127                 if (!ramp_delay) {
128                         ramp_enable = 0;
129                         break;
130                 }
131 
132                 s2mps11->ramp_delay2 = ramp_delay;
133                 ramp_shift = S2MPS11_BUCK2_RAMP_SHIFT;
134                 ramp_reg = S2MPS11_REG_RAMP;
135                 break;
136         case S2MPS11_BUCK3:
137                 enable_shift = S2MPS11_BUCK3_RAMP_EN_SHIFT;
138                 if (!ramp_delay) {
139                         ramp_enable = 0;
140                         break;
141                 }
142 
143                 if (ramp_delay > s2mps11->ramp_delay34)
144                         s2mps11->ramp_delay34 = ramp_delay;
145                 else
146                         ramp_delay = s2mps11->ramp_delay34;
147 
148                 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
149                 ramp_reg = S2MPS11_REG_RAMP;
150                 break;
151         case S2MPS11_BUCK4:
152                 enable_shift = S2MPS11_BUCK4_RAMP_EN_SHIFT;
153                 if (!ramp_delay) {
154                         ramp_enable = 0;
155                         break;
156                 }
157 
158                 if (ramp_delay > s2mps11->ramp_delay34)
159                         s2mps11->ramp_delay34 = ramp_delay;
160                 else
161                         ramp_delay = s2mps11->ramp_delay34;
162 
163                 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
164                 ramp_reg = S2MPS11_REG_RAMP;
165                 break;
166         case S2MPS11_BUCK5:
167                 s2mps11->ramp_delay5 = ramp_delay;
168                 ramp_shift = S2MPS11_BUCK5_RAMP_SHIFT;
169                 break;
170         case S2MPS11_BUCK6:
171                 enable_shift = S2MPS11_BUCK6_RAMP_EN_SHIFT;
172                 if (!ramp_delay) {
173                         ramp_enable = 0;
174                         break;
175                 }
176 
177                 if (ramp_delay > s2mps11->ramp_delay16)
178                         s2mps11->ramp_delay16 = ramp_delay;
179                 else
180                         ramp_delay = s2mps11->ramp_delay16;
181 
182                 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
183                 break;
184         case S2MPS11_BUCK7:
185         case S2MPS11_BUCK8:
186         case S2MPS11_BUCK10:
187                 if (ramp_delay > s2mps11->ramp_delay7810)
188                         s2mps11->ramp_delay7810 = ramp_delay;
189                 else
190                         ramp_delay = s2mps11->ramp_delay7810;
191 
192                 ramp_shift = S2MPS11_BUCK7810_RAMP_SHIFT;
193                 break;
194         case S2MPS11_BUCK9:
195                 s2mps11->ramp_delay9 = ramp_delay;
196                 ramp_shift = S2MPS11_BUCK9_RAMP_SHIFT;
197                 break;
198         default:
199                 return 0;
200         }
201 
202         if (!ramp_enable)
203                 goto ramp_disable;
204 
205         ret = regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
206                                  1 << enable_shift, 1 << enable_shift);
207         if (ret) {
208                 dev_err(&rdev->dev, "failed to enable ramp rate\n");
209                 return ret;
210         }
211 
212         ramp_val = get_ramp_delay(ramp_delay);
213 
214         return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
215                                   ramp_val << ramp_shift);
216 
217 ramp_disable:
218         return regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
219                                   1 << enable_shift, 0);
220 }
221 
222 static struct regulator_ops s2mps11_ldo_ops = {
223         .list_voltage           = regulator_list_voltage_linear,
224         .map_voltage            = regulator_map_voltage_linear,
225         .is_enabled             = regulator_is_enabled_regmap,
226         .enable                 = regulator_enable_regmap,
227         .disable                = regulator_disable_regmap,
228         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
229         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
230         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
231 };
232 
233 static struct regulator_ops s2mps11_buck_ops = {
234         .list_voltage           = regulator_list_voltage_linear,
235         .map_voltage            = regulator_map_voltage_linear,
236         .is_enabled             = regulator_is_enabled_regmap,
237         .enable                 = regulator_enable_regmap,
238         .disable                = regulator_disable_regmap,
239         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
240         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
241         .set_voltage_time_sel   = s2mps11_regulator_set_voltage_time_sel,
242         .set_ramp_delay         = s2mps11_set_ramp_delay,
243 };
244 
245 #define regulator_desc_s2mps11_ldo1(num)        {               \
246         .name           = "LDO"#num,                    \
247         .id             = S2MPS11_LDO##num,             \
248         .ops            = &s2mps11_ldo_ops,             \
249         .type           = REGULATOR_VOLTAGE,            \
250         .owner          = THIS_MODULE,                  \
251         .min_uV         = S2MPS11_LDO_MIN,              \
252         .uV_step        = S2MPS11_LDO_STEP1,            \
253         .n_voltages     = S2MPS11_LDO_N_VOLTAGES,       \
254         .vsel_reg       = S2MPS11_REG_L1CTRL + num - 1, \
255         .vsel_mask      = S2MPS11_LDO_VSEL_MASK,        \
256         .enable_reg     = S2MPS11_REG_L1CTRL + num - 1, \
257         .enable_mask    = S2MPS11_ENABLE_MASK           \
258 }
259 #define regulator_desc_s2mps11_ldo2(num) {              \
260         .name           = "LDO"#num,                    \
261         .id             = S2MPS11_LDO##num,             \
262         .ops            = &s2mps11_ldo_ops,             \
263         .type           = REGULATOR_VOLTAGE,            \
264         .owner          = THIS_MODULE,                  \
265         .min_uV         = S2MPS11_LDO_MIN,              \
266         .uV_step        = S2MPS11_LDO_STEP2,            \
267         .n_voltages     = S2MPS11_LDO_N_VOLTAGES,       \
268         .vsel_reg       = S2MPS11_REG_L1CTRL + num - 1, \
269         .vsel_mask      = S2MPS11_LDO_VSEL_MASK,        \
270         .enable_reg     = S2MPS11_REG_L1CTRL + num - 1, \
271         .enable_mask    = S2MPS11_ENABLE_MASK           \
272 }
273 
274 #define regulator_desc_s2mps11_buck1_4(num) {                   \
275         .name           = "BUCK"#num,                           \
276         .id             = S2MPS11_BUCK##num,                    \
277         .ops            = &s2mps11_buck_ops,                    \
278         .type           = REGULATOR_VOLTAGE,                    \
279         .owner          = THIS_MODULE,                          \
280         .min_uV         = S2MPS11_BUCK_MIN1,                    \
281         .uV_step        = S2MPS11_BUCK_STEP1,                   \
282         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
283         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
284         .vsel_reg       = S2MPS11_REG_B1CTRL2 + (num - 1) * 2,  \
285         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
286         .enable_reg     = S2MPS11_REG_B1CTRL1 + (num - 1) * 2,  \
287         .enable_mask    = S2MPS11_ENABLE_MASK                   \
288 }
289 
290 #define regulator_desc_s2mps11_buck5 {                          \
291         .name           = "BUCK5",                              \
292         .id             = S2MPS11_BUCK5,                        \
293         .ops            = &s2mps11_buck_ops,                    \
294         .type           = REGULATOR_VOLTAGE,                    \
295         .owner          = THIS_MODULE,                          \
296         .min_uV         = S2MPS11_BUCK_MIN1,                    \
297         .uV_step        = S2MPS11_BUCK_STEP1,                   \
298         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
299         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
300         .vsel_reg       = S2MPS11_REG_B5CTRL2,                  \
301         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
302         .enable_reg     = S2MPS11_REG_B5CTRL1,                  \
303         .enable_mask    = S2MPS11_ENABLE_MASK                   \
304 }
305 
306 #define regulator_desc_s2mps11_buck6_8(num) {                   \
307         .name           = "BUCK"#num,                           \
308         .id             = S2MPS11_BUCK##num,                    \
309         .ops            = &s2mps11_buck_ops,                    \
310         .type           = REGULATOR_VOLTAGE,                    \
311         .owner          = THIS_MODULE,                          \
312         .min_uV         = S2MPS11_BUCK_MIN1,                    \
313         .uV_step        = S2MPS11_BUCK_STEP1,                   \
314         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
315         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
316         .vsel_reg       = S2MPS11_REG_B6CTRL2 + (num - 6) * 2,  \
317         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
318         .enable_reg     = S2MPS11_REG_B6CTRL1 + (num - 6) * 2,  \
319         .enable_mask    = S2MPS11_ENABLE_MASK                   \
320 }
321 
322 #define regulator_desc_s2mps11_buck9 {                          \
323         .name           = "BUCK9",                              \
324         .id             = S2MPS11_BUCK9,                        \
325         .ops            = &s2mps11_buck_ops,                    \
326         .type           = REGULATOR_VOLTAGE,                    \
327         .owner          = THIS_MODULE,                          \
328         .min_uV         = S2MPS11_BUCK_MIN3,                    \
329         .uV_step        = S2MPS11_BUCK_STEP3,                   \
330         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
331         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
332         .vsel_reg       = S2MPS11_REG_B9CTRL2,                  \
333         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
334         .enable_reg     = S2MPS11_REG_B9CTRL1,                  \
335         .enable_mask    = S2MPS11_ENABLE_MASK                   \
336 }
337 
338 #define regulator_desc_s2mps11_buck10 {                         \
339         .name           = "BUCK10",                             \
340         .id             = S2MPS11_BUCK10,                       \
341         .ops            = &s2mps11_buck_ops,                    \
342         .type           = REGULATOR_VOLTAGE,                    \
343         .owner          = THIS_MODULE,                          \
344         .min_uV         = S2MPS11_BUCK_MIN2,                    \
345         .uV_step        = S2MPS11_BUCK_STEP2,                   \
346         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
347         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
348         .vsel_reg       = S2MPS11_REG_B10CTRL2,                 \
349         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
350         .enable_reg     = S2MPS11_REG_B10CTRL1,                 \
351         .enable_mask    = S2MPS11_ENABLE_MASK                   \
352 }
353 
354 static const struct regulator_desc s2mps11_regulators[] = {
355         regulator_desc_s2mps11_ldo2(1),
356         regulator_desc_s2mps11_ldo1(2),
357         regulator_desc_s2mps11_ldo1(3),
358         regulator_desc_s2mps11_ldo1(4),
359         regulator_desc_s2mps11_ldo1(5),
360         regulator_desc_s2mps11_ldo2(6),
361         regulator_desc_s2mps11_ldo1(7),
362         regulator_desc_s2mps11_ldo1(8),
363         regulator_desc_s2mps11_ldo1(9),
364         regulator_desc_s2mps11_ldo1(10),
365         regulator_desc_s2mps11_ldo2(11),
366         regulator_desc_s2mps11_ldo1(12),
367         regulator_desc_s2mps11_ldo1(13),
368         regulator_desc_s2mps11_ldo1(14),
369         regulator_desc_s2mps11_ldo1(15),
370         regulator_desc_s2mps11_ldo1(16),
371         regulator_desc_s2mps11_ldo1(17),
372         regulator_desc_s2mps11_ldo1(18),
373         regulator_desc_s2mps11_ldo1(19),
374         regulator_desc_s2mps11_ldo1(20),
375         regulator_desc_s2mps11_ldo1(21),
376         regulator_desc_s2mps11_ldo2(22),
377         regulator_desc_s2mps11_ldo2(23),
378         regulator_desc_s2mps11_ldo1(24),
379         regulator_desc_s2mps11_ldo1(25),
380         regulator_desc_s2mps11_ldo1(26),
381         regulator_desc_s2mps11_ldo2(27),
382         regulator_desc_s2mps11_ldo1(28),
383         regulator_desc_s2mps11_ldo1(29),
384         regulator_desc_s2mps11_ldo1(30),
385         regulator_desc_s2mps11_ldo1(31),
386         regulator_desc_s2mps11_ldo1(32),
387         regulator_desc_s2mps11_ldo1(33),
388         regulator_desc_s2mps11_ldo1(34),
389         regulator_desc_s2mps11_ldo1(35),
390         regulator_desc_s2mps11_ldo1(36),
391         regulator_desc_s2mps11_ldo1(37),
392         regulator_desc_s2mps11_ldo1(38),
393         regulator_desc_s2mps11_buck1_4(1),
394         regulator_desc_s2mps11_buck1_4(2),
395         regulator_desc_s2mps11_buck1_4(3),
396         regulator_desc_s2mps11_buck1_4(4),
397         regulator_desc_s2mps11_buck5,
398         regulator_desc_s2mps11_buck6_8(6),
399         regulator_desc_s2mps11_buck6_8(7),
400         regulator_desc_s2mps11_buck6_8(8),
401         regulator_desc_s2mps11_buck9,
402         regulator_desc_s2mps11_buck10,
403 };
404 
405 static int s2mps14_regulator_enable(struct regulator_dev *rdev)
406 {
407         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
408         unsigned int val;
409 
410         if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
411                 val = S2MPS14_ENABLE_SUSPEND;
412         else
413                 val = rdev->desc->enable_mask;
414 
415         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
416                         rdev->desc->enable_mask, val);
417 }
418 
419 static int s2mps14_regulator_set_suspend_disable(struct regulator_dev *rdev)
420 {
421         int ret;
422         unsigned int val;
423         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
424 
425         /* LDO3 should be always on and does not support suspend mode */
426         if (rdev_get_id(rdev) == S2MPS14_LDO3)
427                 return 0;
428 
429         ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
430         if (ret < 0)
431                 return ret;
432 
433         s2mps11->s2mps14_suspend_state |= (1 << rdev_get_id(rdev));
434         /*
435          * Don't enable suspend mode if regulator is already disabled because
436          * this would effectively for a short time turn on the regulator after
437          * resuming.
438          * However we still want to toggle the suspend_state bit for regulator
439          * in case if it got enabled before suspending the system.
440          */
441         if (!(val & rdev->desc->enable_mask))
442                 return 0;
443 
444         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
445                         rdev->desc->enable_mask, S2MPS14_ENABLE_SUSPEND);
446 }
447 
448 static struct regulator_ops s2mps14_reg_ops = {
449         .list_voltage           = regulator_list_voltage_linear,
450         .map_voltage            = regulator_map_voltage_linear,
451         .is_enabled             = regulator_is_enabled_regmap,
452         .enable                 = s2mps14_regulator_enable,
453         .disable                = regulator_disable_regmap,
454         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
455         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
456         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
457         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
458 };
459 
460 #define regulator_desc_s2mps14_ldo1(num) {              \
461         .name           = "LDO"#num,                    \
462         .id             = S2MPS14_LDO##num,             \
463         .ops            = &s2mps14_reg_ops,             \
464         .type           = REGULATOR_VOLTAGE,            \
465         .owner          = THIS_MODULE,                  \
466         .min_uV         = S2MPS14_LDO_MIN_800MV,        \
467         .uV_step        = S2MPS14_LDO_STEP_25MV,        \
468         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
469         .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
470         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
471         .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
472         .enable_mask    = S2MPS14_ENABLE_MASK           \
473 }
474 #define regulator_desc_s2mps14_ldo2(num) {              \
475         .name           = "LDO"#num,                    \
476         .id             = S2MPS14_LDO##num,             \
477         .ops            = &s2mps14_reg_ops,             \
478         .type           = REGULATOR_VOLTAGE,            \
479         .owner          = THIS_MODULE,                  \
480         .min_uV         = S2MPS14_LDO_MIN_1800MV,       \
481         .uV_step        = S2MPS14_LDO_STEP_25MV,        \
482         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
483         .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
484         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
485         .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
486         .enable_mask    = S2MPS14_ENABLE_MASK           \
487 }
488 #define regulator_desc_s2mps14_ldo3(num) {              \
489         .name           = "LDO"#num,                    \
490         .id             = S2MPS14_LDO##num,             \
491         .ops            = &s2mps14_reg_ops,             \
492         .type           = REGULATOR_VOLTAGE,            \
493         .owner          = THIS_MODULE,                  \
494         .min_uV         = S2MPS14_LDO_MIN_800MV,        \
495         .uV_step        = S2MPS14_LDO_STEP_12_5MV,      \
496         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
497         .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
498         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
499         .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
500         .enable_mask    = S2MPS14_ENABLE_MASK           \
501 }
502 #define regulator_desc_s2mps14_buck1235(num) {                  \
503         .name           = "BUCK"#num,                           \
504         .id             = S2MPS14_BUCK##num,                    \
505         .ops            = &s2mps14_reg_ops,                     \
506         .type           = REGULATOR_VOLTAGE,                    \
507         .owner          = THIS_MODULE,                          \
508         .min_uV         = S2MPS14_BUCK1235_MIN_600MV,           \
509         .uV_step        = S2MPS14_BUCK1235_STEP_6_25MV,         \
510         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
511         .linear_min_sel = S2MPS14_BUCK1235_START_SEL,           \
512         .ramp_delay     = S2MPS14_BUCK_RAMP_DELAY,              \
513         .vsel_reg       = S2MPS14_REG_B1CTRL2 + (num - 1) * 2,  \
514         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
515         .enable_reg     = S2MPS14_REG_B1CTRL1 + (num - 1) * 2,  \
516         .enable_mask    = S2MPS14_ENABLE_MASK                   \
517 }
518 #define regulator_desc_s2mps14_buck4(num) {                     \
519         .name           = "BUCK"#num,                           \
520         .id             = S2MPS14_BUCK##num,                    \
521         .ops            = &s2mps14_reg_ops,                     \
522         .type           = REGULATOR_VOLTAGE,                    \
523         .owner          = THIS_MODULE,                          \
524         .min_uV         = S2MPS14_BUCK4_MIN_1400MV,             \
525         .uV_step        = S2MPS14_BUCK4_STEP_12_5MV,            \
526         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
527         .linear_min_sel = S2MPS14_BUCK4_START_SEL,              \
528         .ramp_delay     = S2MPS14_BUCK_RAMP_DELAY,              \
529         .vsel_reg       = S2MPS14_REG_B1CTRL2 + (num - 1) * 2,  \
530         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
531         .enable_reg     = S2MPS14_REG_B1CTRL1 + (num - 1) * 2,  \
532         .enable_mask    = S2MPS14_ENABLE_MASK                   \
533 }
534 
535 static const struct regulator_desc s2mps14_regulators[] = {
536         regulator_desc_s2mps14_ldo3(1),
537         regulator_desc_s2mps14_ldo3(2),
538         regulator_desc_s2mps14_ldo1(3),
539         regulator_desc_s2mps14_ldo1(4),
540         regulator_desc_s2mps14_ldo3(5),
541         regulator_desc_s2mps14_ldo3(6),
542         regulator_desc_s2mps14_ldo1(7),
543         regulator_desc_s2mps14_ldo2(8),
544         regulator_desc_s2mps14_ldo3(9),
545         regulator_desc_s2mps14_ldo3(10),
546         regulator_desc_s2mps14_ldo1(11),
547         regulator_desc_s2mps14_ldo2(12),
548         regulator_desc_s2mps14_ldo2(13),
549         regulator_desc_s2mps14_ldo2(14),
550         regulator_desc_s2mps14_ldo2(15),
551         regulator_desc_s2mps14_ldo2(16),
552         regulator_desc_s2mps14_ldo2(17),
553         regulator_desc_s2mps14_ldo2(18),
554         regulator_desc_s2mps14_ldo1(19),
555         regulator_desc_s2mps14_ldo1(20),
556         regulator_desc_s2mps14_ldo1(21),
557         regulator_desc_s2mps14_ldo3(22),
558         regulator_desc_s2mps14_ldo1(23),
559         regulator_desc_s2mps14_ldo2(24),
560         regulator_desc_s2mps14_ldo2(25),
561         regulator_desc_s2mps14_buck1235(1),
562         regulator_desc_s2mps14_buck1235(2),
563         regulator_desc_s2mps14_buck1235(3),
564         regulator_desc_s2mps14_buck4(4),
565         regulator_desc_s2mps14_buck1235(5),
566 };
567 
568 static int s2mps11_pmic_probe(struct platform_device *pdev)
569 {
570         struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
571         struct sec_platform_data *pdata = iodev->pdata;
572         struct of_regulator_match *rdata = NULL;
573         struct device_node *reg_np = NULL;
574         struct regulator_config config = { };
575         struct s2mps11_info *s2mps11;
576         int i, ret = 0;
577         const struct regulator_desc *regulators;
578         enum sec_device_type dev_type;
579 
580         s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
581                                 GFP_KERNEL);
582         if (!s2mps11)
583                 return -ENOMEM;
584 
585         dev_type = platform_get_device_id(pdev)->driver_data;
586         switch (dev_type) {
587         case S2MPS11X:
588                 s2mps11->rdev_num = ARRAY_SIZE(s2mps11_regulators);
589                 regulators = s2mps11_regulators;
590                 break;
591         case S2MPS14X:
592                 s2mps11->rdev_num = ARRAY_SIZE(s2mps14_regulators);
593                 regulators = s2mps14_regulators;
594                 break;
595         default:
596                 dev_err(&pdev->dev, "Invalid device type: %u\n", dev_type);
597                 return -EINVAL;
598         };
599 
600         if (!iodev->dev->of_node) {
601                 if (pdata) {
602                         goto common_reg;
603                 } else {
604                         dev_err(pdev->dev.parent,
605                                 "Platform data or DT node not supplied\n");
606                         return -ENODEV;
607                 }
608         }
609 
610         rdata = kzalloc(sizeof(*rdata) * s2mps11->rdev_num, GFP_KERNEL);
611         if (!rdata)
612                 return -ENOMEM;
613 
614         for (i = 0; i < s2mps11->rdev_num; i++)
615                 rdata[i].name = regulators[i].name;
616 
617         reg_np = of_get_child_by_name(iodev->dev->of_node, "regulators");
618         if (!reg_np) {
619                 dev_err(&pdev->dev, "could not find regulators sub-node\n");
620                 ret = -EINVAL;
621                 goto out;
622         }
623 
624         of_regulator_match(&pdev->dev, reg_np, rdata, s2mps11->rdev_num);
625         of_node_put(reg_np);
626 
627 common_reg:
628         platform_set_drvdata(pdev, s2mps11);
629 
630         config.dev = &pdev->dev;
631         config.regmap = iodev->regmap_pmic;
632         config.driver_data = s2mps11;
633         for (i = 0; i < s2mps11->rdev_num; i++) {
634                 struct regulator_dev *regulator;
635 
636                 if (!reg_np) {
637                         config.init_data = pdata->regulators[i].initdata;
638                         config.of_node = pdata->regulators[i].reg_node;
639                 } else {
640                         config.init_data = rdata[i].init_data;
641                         config.of_node = rdata[i].of_node;
642                 }
643 
644                 regulator = devm_regulator_register(&pdev->dev,
645                                                 &regulators[i], &config);
646                 if (IS_ERR(regulator)) {
647                         ret = PTR_ERR(regulator);
648                         dev_err(&pdev->dev, "regulator init failed for %d\n",
649                                 i);
650                         goto out;
651                 }
652         }
653 
654 out:
655         kfree(rdata);
656 
657         return ret;
658 }
659 
660 static const struct platform_device_id s2mps11_pmic_id[] = {
661         { "s2mps11-pmic", S2MPS11X},
662         { "s2mps14-pmic", S2MPS14X},
663         { },
664 };
665 MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
666 
667 static struct platform_driver s2mps11_pmic_driver = {
668         .driver = {
669                 .name = "s2mps11-pmic",
670                 .owner = THIS_MODULE,
671         },
672         .probe = s2mps11_pmic_probe,
673         .id_table = s2mps11_pmic_id,
674 };
675 
676 static int __init s2mps11_pmic_init(void)
677 {
678         return platform_driver_register(&s2mps11_pmic_driver);
679 }
680 subsys_initcall(s2mps11_pmic_init);
681 
682 static void __exit s2mps11_pmic_exit(void)
683 {
684         platform_driver_unregister(&s2mps11_pmic_driver);
685 }
686 module_exit(s2mps11_pmic_exit);
687 
688 /* Module information */
689 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
690 MODULE_DESCRIPTION("SAMSUNG S2MPS11/S2MPS14 Regulator Driver");
691 MODULE_LICENSE("GPL");
692 

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